Please note that this post is tagged as a rumor.
AMD Raphael with 4 Compute Units and a 1.1 GHz clock?
According to the most recent changes introduced to AMD SMU (System Management Unit) driver, the Zen4 integrated GPU could be clocked at 1.1 GHz.
As revealed last year, AMD processors codenamed “Raphael” will be the first architecture of Ryzen products to span across desktop and mobile devices. A major change is coming to the desktop series with an introduction of integrated RDNA2 graphics that were thus far not available for desktop the Ryzen 1000-5000 series outside of the repurposed mobile G-series chips.
As speculated by KOMACHI_ENSAKA, the Raphel iGPU configuration may consist of 2 Workgroup Processors, featuring a total of 4 Compute Units. Based on the SMU update, it would appear that a 1.1 GHz clock speed could be applied to those cores. If this was the case, this would be a low-power GPU with 0.5 TFLOPs of single-precision compute performance.
This means that the supposed Raphael iGPU would offer a third of the Stream Deck’s maximum graphics performance. The APU powering Valve’s handheld console is equipped with 8 Compute Units (RDNA2) clocked between 1.1 to 1.6 GHz (up to 1.6 TFLOPs).
Raphael’s GPU performance does not have to be high though, in fact, 256 Stream Processors are already very capable. The main purpose of the desktop CPU graphics subsystem is to act as a display engine. High graphics performance should be a lot more important for ultra-thin laptops which lack discrete GPUs though. At this moment, it is unclear if there are changes between Raphael-S (desktop) and Raphael-H (mobile) iGPU configurations.
The SMU 13.0.5 defines a maximum GFX Clock of 1100 (MHz), Source: Freedesktop
AMD Zen4 chips codenamed “Raphael” will be deployed in mobile and desktop space. It is being said that the mobile version will feature as many as 16 cores, a double of the just-released “Zen3/Rembrandt” Ryzen 6000 series.
AMD confirmed that desktop Zen4 chips will be part of the Ryzen 7000 series and they will require a new platform. The Zen4 processors are to utilize the LGA1718 socket known as AM5. The company confirmed it will be cooler-compatible with existing AM4 solutions. Furthermore, the Zen4 chips will bring support for DDR5 memory for desktops, as well as PCI Express 5.0.
| AMD Mainstream Desktop CPU Series | |||||
|---|---|---|---|---|---|
| VideoCardz.com | Matisse | Vermeer | Vermeer-X3D | Raphael | Granite Ridge |
| Launch Date | July 2019 | November 2020 | Spring 2022 | 2H 2022 | 2023 |
| AMD Ryzen Series | Ryzen 3000 | Ryzen 5000 | Ryzen 5000X3D | Ryzen 7000 | Ryzen 8000 |
| Core µArch | Zen2 | Zen3 | Zen3D | Zen4 | Zen5 |
| Graphics | – | – | – | 4CUs RDNA2 | TBC |
| Max Core Count | 16 | 16 | 16 | TBC | TBC |
| Socket | AM4 | AM4 | AM4 | AM5 | AM5 |
| Memory Support | DDR4 | DDR4 | DDR4 | DDR5 | DDR5 |
| PCIe Gen | PCIe Gen4 | PCIe Gen4 | PCIe Gen4 | PCIe Gen5 | PCIe Gen5 |
| Motherboard Chipset | AMD 400 | AMD 500 | AMD 500 | AMD 600 | TBC |
Source: Freedesktop via @KOMACHI_ENSAKA
